![]() exp tables=EMPLOYEES file=EMP_BKP14082021.dmp Here we want to export the EMPLOYEES table and store the table’s structure and data in a file on the server with a. The EXP command is used to export the whole schema and specific table/s. Conner McDonald How to Backup a Table in Oracle using the EXP Command You need the primary key columns so you could map the data back to the original table if you needed to. Also, without indexes or constraints except for check, NOT NULL constraints. Just copy the structure of the original table. CREATE TABLE DEPT_BKP14082021Įxecuting the above SQL statement successfully will create a new table called ” DEPT_BKP14082021 ” without any rows inside. We have to use the where clause by specifying a condition that will always evaluate with FALSE. To create a new copy of the table but without any data, copy the table’s structure instead of writing CREATE TABLE statement again. How to Backup a Table Without Data in Oracle using SQL CREATE TABLE DEPT_BKP14082021Įxecuting the above SQL statement successfully will create a new table called ” DEPT_BKP14082021 ” with only rows that its department name is ( Payroll, IT Helpdesk ) of the original table “DEPARTMENTS.” here, we have used the DEPARTMENT_ID column in the where clause because conditions with IDs are really faster and better than names, especially if the original table has huge data. Suppose we need to take a backup of the “DEPARTMENTS” table when the department’s name is (Payroll, IT Helpdesk) we have to use where condition. Suppose we need to take a backup of a table but with a particular set of rows. How to Backup Specific Rows of a Table in Oracle using SQL SELECT DEPARTMENT_ID,DEPARTMENT_NAME FROM DEPARTMENTS Įxecuting the above SQL statement successfully will create a new table called ” DEPT_BKP14082021 ” with only two columns of the original table “DEPARTMENTS,” which is DEPARTEMENT_ID and DEPARTEMENT_NAME with its data. Let’s take a backup of two columns of the Department table (DEPARTMENT_ID, DEPARTMENT_NAME). To create a new copy of a table but with specific columns. How to Backup Specific Columns of a Table in Oracle using SQL But we didn’t say all constraints because the Above SQL statement will back up only the not null check constraints. Note: Creating a new table backup using the above SQL statement will not copy all constraints, indexes, triggers, or comments on the table or columns available on the original table. This is our naming convention when we are backing up the database table. as it appears here, we are using a shortcut of a table name after that, BKP it’s the shorthand of Backup and today date. CREATE TABLE EMP_BKP14082021Įxecuting the above SQL statement successfully will create a new table called ” EMP_BKP14082021 “. In our example below, we are using the Employees table. Suppose we need to create another copy of a table structure with all data. ![]() How to Backup a Table in Oracle using SQL Now let’s take them one by one in more detail. How to backup a table in Oracle using Toad?.How to backup a table in Oracle using SQL Developer?.How to multiple backup tables in oracle using the EXP command?.How to backup a table in Oracle using EXP command?.How to backup a table without data in Oracle using SQL?.How to backup Specific rows of a table in Oracle using SQL?.How to backup specific columns of a table in Oracle using SQL?.How to backup a table in Oracle using SQL?. ![]() Go to the destination directory and you can see all the exported files. By default, all the object types will be selected User can check the objects that want to export. Ie, it will create new directories named Table, View, Functions, etc and it will save the corresponding files to the directories Also, you can export as different directories. You can export the objects in a single file or as separated files. After the export, the files will be saved in this location. If you want it in a SQL format then you have to opt insert option.Ĭhoose the destination directory location. There will be options like insert, XLS, XLSX, etc. Step 2: Choose the environment/Connection that you want to export It can be used for comparing two schemas. This will help you to keep backups, to move to another environment like development to UAT. Using SQL developer you can export all the user-created objects in a particular schema. There will be scenarios like the developer wants to export the DDL/Data of user objects like Table, View, Packages, Functions, Procedures, Trigger, etc.
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